DocumentCode :
2682174
Title :
Error analysis of ICESat waveform processing by investigating overlapping pairs over Europe
Author :
Duong, Hieu ; Lindenbergh, Roderik ; Pfeifer, Norbert ; Vosselman, George
Author_Institution :
Delft Univ. of Technol., Delft
fYear :
2007
fDate :
23-28 July 2007
Firstpage :
4753
Lastpage :
4756
Abstract :
Full waveform laser altimetry is a recently developed method to obtain a complete vertical profile of the height of objects in the footprint as illuminated by a laser pulse. The richness of the signal also complicates the processing. One way to improve the processing strategy is to analyze differences of waveforms that should be very similar because they were obtained at approximately the same time and location. Such waveform pairs are still difficult to find. Here it is shown how to use the archive of ICESat space-borne altimetry data over Europe to determine a set of tenths of thousands of at least partial overlapping waveform pairs. The differences in the values of the waveform parameters, median energy, waveform extent, relative returned energy and intensity distribution are determined and discussed. As a case study, three typical pairs of almost perfectly overlapping waveforms are shown, were considerable differences are still occurring. In all three cases an explanation for these differences is found and discussed. Further analysis of the waveform pairs in this database is expected to considerably improve automatic processing of full waveform data.
Keywords :
error analysis; geophysical signal processing; height measurement; measurement by laser beam; optical radar; remote sensing by laser beam; waveform analysis; Europe; ICESat; automatic processing; error analysis; full waveform laser altimetry; laser pulse; object height; overlapping pairs; space-borne altimetry data; vertical profile; waveform processing; Classification tree analysis; Error analysis; Europe; Geoscience; Ice; Laser radar; Moisture; Optical pulses; Space technology; Surface topography;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
Type :
conf
DOI :
10.1109/IGARSS.2007.4423922
Filename :
4423922
Link To Document :
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